| /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */ |
| /** |
| * Copyright (c) 2014, Regents of the University of California, |
| * Arizona Board of Regents, |
| * Colorado State University, |
| * University Pierre & Marie Curie, Sorbonne University, |
| * Washington University in St. Louis, |
| * Beijing Institute of Technology, |
| * The University of Memphis |
| * |
| * This file is part of NFD (Named Data Networking Forwarding Daemon). |
| * See AUTHORS.md for complete list of NFD authors and contributors. |
| * |
| * NFD is free software: you can redistribute it and/or modify it under the terms |
| * of the GNU General Public License as published by the Free Software Foundation, |
| * either version 3 of the License, or (at your option) any later version. |
| * |
| * NFD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; |
| * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR |
| * PURPOSE. See the GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License along with |
| * NFD, e.g., in COPYING.md file. If not, see <http://www.gnu.org/licenses/>. |
| */ |
| |
| #include "rib-manager.hpp" |
| #include "core/global-io.hpp" |
| #include "core/logger.hpp" |
| #include "core/scheduler.hpp" |
| #include <ndn-cxx/management/nfd-face-status.hpp> |
| |
| namespace nfd { |
| namespace rib { |
| |
| NFD_LOG_INIT("RibManager"); |
| |
| const Name RibManager::COMMAND_PREFIX = "/localhost/nfd/rib"; |
| const Name RibManager::REMOTE_COMMAND_PREFIX = "/localhop/nfd/rib"; |
| const Name RibManager::FACES_LIST_DATASET_PREFIX = "/localhost/nfd/faces/list"; |
| |
| const size_t RibManager::COMMAND_UNSIGNED_NCOMPS = |
| RibManager::COMMAND_PREFIX.size() + |
| 1 + // verb |
| 1; // verb options |
| |
| const size_t RibManager::COMMAND_SIGNED_NCOMPS = |
| RibManager::COMMAND_UNSIGNED_NCOMPS + |
| 4; // (timestamp, nonce, signed info tlv, signature tlv) |
| |
| const RibManager::SignedVerbAndProcessor RibManager::SIGNED_COMMAND_VERBS[] = |
| { |
| SignedVerbAndProcessor( |
| Name::Component("register"), |
| &RibManager::registerEntry |
| ), |
| |
| SignedVerbAndProcessor( |
| Name::Component("unregister"), |
| &RibManager::unregisterEntry |
| ), |
| }; |
| |
| const RibManager::UnsignedVerbAndProcessor RibManager::UNSIGNED_COMMAND_VERBS[] = |
| { |
| UnsignedVerbAndProcessor( |
| Name::Component("list"), |
| &RibManager::listEntries |
| ), |
| }; |
| |
| const Name RibManager::LIST_COMMAND_PREFIX("/localhost/nfd/rib/list"); |
| const size_t RibManager::LIST_COMMAND_NCOMPS = LIST_COMMAND_PREFIX.size(); |
| |
| const time::seconds RibManager::ACTIVE_FACE_FETCH_INTERVAL = time::seconds(300); |
| |
| RibManager::RibManager(ndn::Face& face) |
| : m_face(face) |
| , m_nfdController(m_face, m_keyChain) |
| , m_localhostValidator(m_face) |
| , m_localhopValidator(m_face) |
| , m_faceMonitor(m_face) |
| , m_isLocalhopEnabled(false) |
| , m_remoteRegistrator(m_nfdController, m_keyChain, m_managedRib) |
| , m_ribStatusPublisher(m_managedRib, face, LIST_COMMAND_PREFIX, m_keyChain) |
| , m_lastTransactionId(0) |
| , m_signedVerbDispatch(SIGNED_COMMAND_VERBS, |
| SIGNED_COMMAND_VERBS + |
| (sizeof(SIGNED_COMMAND_VERBS) / sizeof(SignedVerbAndProcessor))) |
| , m_unsignedVerbDispatch(UNSIGNED_COMMAND_VERBS, |
| UNSIGNED_COMMAND_VERBS + |
| (sizeof(UNSIGNED_COMMAND_VERBS) / sizeof(UnsignedVerbAndProcessor))) |
| { |
| } |
| |
| RibManager::~RibManager() |
| { |
| scheduler::cancel(m_activeFaceFetchEvent); |
| } |
| |
| void |
| RibManager::startListening(const Name& commandPrefix, const ndn::OnInterest& onRequest) |
| { |
| NFD_LOG_INFO("Listening on: " << commandPrefix); |
| |
| m_nfdController.start<ndn::nfd::FibAddNextHopCommand>( |
| ControlParameters() |
| .setName(commandPrefix) |
| .setFaceId(0), |
| bind(&RibManager::onNrdCommandPrefixAddNextHopSuccess, this, cref(commandPrefix)), |
| bind(&RibManager::onNrdCommandPrefixAddNextHopError, this, cref(commandPrefix), _2)); |
| |
| m_face.setInterestFilter(commandPrefix, onRequest); |
| } |
| |
| void |
| RibManager::registerWithNfd() |
| { |
| //check whether the components of localhop and localhost prefixes are same |
| BOOST_ASSERT(COMMAND_PREFIX.size() == REMOTE_COMMAND_PREFIX.size()); |
| |
| this->startListening(COMMAND_PREFIX, bind(&RibManager::onLocalhostRequest, this, _2)); |
| |
| if (m_isLocalhopEnabled) { |
| this->startListening(REMOTE_COMMAND_PREFIX, |
| bind(&RibManager::onLocalhopRequest, this, _2)); |
| } |
| |
| NFD_LOG_INFO("Start monitoring face create/destroy events"); |
| m_faceMonitor.onNotification += bind(&RibManager::onNotification, this, _1); |
| m_faceMonitor.start(); |
| |
| scheduleActiveFaceFetch(ACTIVE_FACE_FETCH_INTERVAL); |
| } |
| |
| void |
| RibManager::setConfigFile(ConfigFile& configFile) |
| { |
| configFile.addSectionHandler("rib", |
| bind(&RibManager::onConfig, this, _1, _2, _3)); |
| } |
| |
| void |
| RibManager::onConfig(const ConfigSection& configSection, |
| bool isDryRun, |
| const std::string& filename) |
| { |
| bool isRemoteRegisterEnabled = false; |
| |
| for (ConfigSection::const_iterator i = configSection.begin(); |
| i != configSection.end(); ++i) |
| { |
| if (i->first == "localhost_security") |
| m_localhostValidator.load(i->second, filename); |
| else if (i->first == "localhop_security") |
| { |
| m_localhopValidator.load(i->second, filename); |
| m_isLocalhopEnabled = true; |
| } |
| else if (i->first == "remote_register") |
| { |
| m_remoteRegistrator.loadConfig(i->second); |
| isRemoteRegisterEnabled = true; |
| // avoid other actions when isDryRun == true |
| if (isDryRun) |
| { |
| continue; |
| } |
| |
| m_remoteRegistrator.enable(); |
| } |
| else |
| throw Error("Unrecognized rib property: " + i->first); |
| } |
| |
| if (!isRemoteRegisterEnabled) |
| { |
| m_remoteRegistrator.disable(); |
| } |
| } |
| |
| void |
| RibManager::sendResponse(const Name& name, |
| const ControlResponse& response) |
| { |
| const Block& encodedControl = response.wireEncode(); |
| |
| shared_ptr<Data> responseData = make_shared<Data>(name); |
| responseData->setContent(encodedControl); |
| |
| m_keyChain.sign(*responseData); |
| m_face.put(*responseData); |
| } |
| |
| void |
| RibManager::sendResponse(const Name& name, |
| uint32_t code, |
| const std::string& text) |
| { |
| ControlResponse response(code, text); |
| sendResponse(name, response); |
| } |
| |
| void |
| RibManager::onLocalhostRequest(const Interest& request) |
| { |
| const Name& command = request.getName(); |
| const Name::Component& verb = command.get(COMMAND_PREFIX.size()); |
| |
| UnsignedVerbDispatchTable::const_iterator unsignedVerbProcessor = m_unsignedVerbDispatch.find(verb); |
| |
| if (unsignedVerbProcessor != m_unsignedVerbDispatch.end()) |
| { |
| NFD_LOG_DEBUG("command result: processing unsigned verb: " << verb); |
| (unsignedVerbProcessor->second)(this, request); |
| } |
| else |
| { |
| m_localhostValidator.validate(request, |
| bind(&RibManager::onCommandValidated, this, _1), |
| bind(&RibManager::onCommandValidationFailed, this, _1, _2)); |
| } |
| } |
| |
| void |
| RibManager::onLocalhopRequest(const Interest& request) |
| { |
| m_localhopValidator.validate(request, |
| bind(&RibManager::onCommandValidated, this, _1), |
| bind(&RibManager::onCommandValidationFailed, this, _1, _2)); |
| } |
| |
| void |
| RibManager::onCommandValidated(const shared_ptr<const Interest>& request) |
| { |
| // REMOTE_COMMAND_PREFIX number of componenets are same as |
| // NRD_COMMAND_PREFIX's so no extra checks are required. |
| |
| const Name& command = request->getName(); |
| const Name::Component& verb = command[COMMAND_PREFIX.size()]; |
| const Name::Component& parameterComponent = command[COMMAND_PREFIX.size() + 1]; |
| |
| SignedVerbDispatchTable::const_iterator verbProcessor = m_signedVerbDispatch.find(verb); |
| if (verbProcessor != m_signedVerbDispatch.end()) |
| { |
| ControlParameters parameters; |
| if (!extractParameters(parameterComponent, parameters)) |
| { |
| NFD_LOG_DEBUG("command result: malformed verb: " << verb); |
| if (static_cast<bool>(request)) |
| sendResponse(command, 400, "Malformed command"); |
| return; |
| } |
| |
| NFD_LOG_DEBUG("command result: processing verb: " << verb); |
| (verbProcessor->second)(this, request, parameters); |
| } |
| else |
| { |
| NFD_LOG_DEBUG("Unsupported command: " << verb); |
| if (static_cast<bool>(request)) |
| sendResponse(request->getName(), 501, "Unsupported command"); |
| } |
| } |
| |
| void |
| RibManager::registerEntry(const shared_ptr<const Interest>& request, |
| ControlParameters& parameters) |
| { |
| ndn::nfd::RibRegisterCommand command; |
| |
| if (!validateParameters(command, parameters)) |
| { |
| NFD_LOG_DEBUG("register result: FAIL reason: malformed"); |
| |
| if (static_cast<bool>(request)) |
| { |
| sendResponse(request->getName(), 400, "Malformed command"); |
| } |
| |
| return; |
| } |
| |
| bool isSelfRegistration = (!parameters.hasFaceId() || parameters.getFaceId() == 0); |
| if (isSelfRegistration) |
| { |
| parameters.setFaceId(request->getIncomingFaceId()); |
| } |
| |
| FaceEntry faceEntry; |
| faceEntry.faceId = parameters.getFaceId(); |
| faceEntry.origin = parameters.getOrigin(); |
| faceEntry.cost = parameters.getCost(); |
| faceEntry.flags = parameters.getFlags(); |
| |
| if (parameters.hasExpirationPeriod() && |
| parameters.getExpirationPeriod() != time::milliseconds::max()) |
| { |
| faceEntry.expires = time::steady_clock::now() + parameters.getExpirationPeriod(); |
| |
| // Schedule a new event, the old one will be cancelled during rib insertion. |
| EventId eventId; |
| eventId = scheduler::schedule(parameters.getExpirationPeriod(), |
| bind(&RibManager::expireEntry, |
| this, shared_ptr<Interest>(), parameters)); |
| NFD_LOG_TRACE("Scheduled unregistration at: " << faceEntry.expires << |
| " with EventId: " << eventId); |
| |
| //set the NewEventId of this entry |
| faceEntry.setExpirationEvent(eventId); |
| } |
| else |
| { |
| faceEntry.expires = time::steady_clock::TimePoint::max(); |
| } |
| |
| NFD_LOG_TRACE("register prefix: " << faceEntry); |
| |
| m_managedRib.insert(parameters.getName(), faceEntry); |
| m_registeredFaces.insert(faceEntry.faceId); |
| |
| sendUpdatesToFib(request, parameters); |
| } |
| |
| void |
| RibManager::expireEntry(const shared_ptr<const Interest>& request, ControlParameters& params) |
| { |
| FaceEntry face; |
| face.faceId = params.getFaceId(); |
| face.origin = params.getOrigin(); |
| face.cost = params.getCost(); |
| face.flags = params.getFlags(); |
| |
| NFD_LOG_DEBUG(face << " for " << params.getName() << " has expired"); |
| unregisterEntry(request, params); |
| } |
| |
| void |
| RibManager::unregisterEntry(const shared_ptr<const Interest>& request, |
| ControlParameters& params) |
| { |
| ndn::nfd::RibUnregisterCommand command; |
| |
| //passing all parameters gives error in validation. |
| //so passing only the required arguments. |
| ControlParameters parameters; |
| parameters.setName(params.getName()); |
| if (params.hasFaceId()) |
| parameters.setFaceId(params.getFaceId()); |
| if (params.hasOrigin()) |
| parameters.setOrigin(params.getOrigin()); |
| |
| if (!validateParameters(command, parameters)) |
| { |
| NFD_LOG_DEBUG("unregister result: FAIL reason: malformed"); |
| if (static_cast<bool>(request)) |
| sendResponse(request->getName(), 400, "Malformed command"); |
| return; |
| } |
| |
| bool isSelfRegistration = (!parameters.hasFaceId() || parameters.getFaceId() == 0); |
| if (isSelfRegistration) |
| { |
| parameters.setFaceId(request->getIncomingFaceId()); |
| } |
| |
| FaceEntry faceEntry; |
| faceEntry.faceId = parameters.getFaceId(); |
| faceEntry.origin = parameters.getOrigin(); |
| |
| NFD_LOG_TRACE("unregister prefix: " << faceEntry); |
| |
| m_managedRib.erase(parameters.getName(), faceEntry); |
| |
| sendUpdatesToFib(request, parameters); |
| } |
| |
| void |
| RibManager::onCommandValidationFailed(const shared_ptr<const Interest>& request, |
| const std::string& failureInfo) |
| { |
| NFD_LOG_DEBUG("RibRequestValidationFailed: " << failureInfo); |
| if (static_cast<bool>(request)) |
| sendResponse(request->getName(), 403, failureInfo); |
| } |
| |
| |
| bool |
| RibManager::extractParameters(const Name::Component& parameterComponent, |
| ControlParameters& extractedParameters) |
| { |
| try |
| { |
| Block rawParameters = parameterComponent.blockFromValue(); |
| extractedParameters.wireDecode(rawParameters); |
| } |
| catch (const tlv::Error&) |
| { |
| return false; |
| } |
| |
| NFD_LOG_DEBUG("Parameters parsed OK"); |
| return true; |
| } |
| |
| bool |
| RibManager::validateParameters(const ControlCommand& command, |
| ControlParameters& parameters) |
| { |
| try |
| { |
| command.validateRequest(parameters); |
| } |
| catch (const ControlCommand::ArgumentError&) |
| { |
| return false; |
| } |
| |
| command.applyDefaultsToRequest(parameters); |
| |
| return true; |
| } |
| |
| void |
| RibManager::onCommandError(uint32_t code, const std::string& error, |
| const shared_ptr<const Interest>& request, |
| const FaceEntry& faceEntry) |
| { |
| NFD_LOG_ERROR("NFD returned an error: " << error << " (code: " << code << ")"); |
| |
| ControlResponse response; |
| |
| if (code == 404) |
| { |
| response.setCode(code); |
| response.setText(error); |
| } |
| else |
| { |
| response.setCode(533); |
| std::ostringstream os; |
| os << "Failure to update NFD " << "(NFD Error: " << code << " " << error << ")"; |
| response.setText(os.str()); |
| } |
| |
| if (static_cast<bool>(request)) |
| sendResponse(request->getName(), response); |
| } |
| |
| void |
| RibManager::onRegSuccess(const shared_ptr<const Interest>& request, |
| const ControlParameters& parameters, |
| const FaceEntry& faceEntry) |
| { |
| ControlResponse response; |
| |
| response.setCode(200); |
| response.setText("Success"); |
| response.setBody(parameters.wireEncode()); |
| |
| NFD_LOG_TRACE("onRegSuccess: registered " << faceEntry); |
| |
| if (static_cast<bool>(request)) |
| sendResponse(request->getName(), response); |
| } |
| |
| |
| void |
| RibManager::onUnRegSuccess(const shared_ptr<const Interest>& request, |
| const ControlParameters& parameters, |
| const FaceEntry& faceEntry) |
| { |
| ControlResponse response; |
| |
| response.setCode(200); |
| response.setText("Success"); |
| response.setBody(parameters.wireEncode()); |
| |
| NFD_LOG_TRACE("onUnRegSuccess: unregistered " << faceEntry); |
| |
| if (static_cast<bool>(request)) |
| sendResponse(request->getName(), response); |
| } |
| |
| void |
| RibManager::sendSuccessResponse(const shared_ptr<const Interest>& request, |
| const ControlParameters& parameters) |
| { |
| if (!static_cast<bool>(request)) |
| { |
| return; |
| } |
| |
| ControlResponse response; |
| |
| response.setCode(200); |
| response.setText("Success"); |
| response.setBody(parameters.wireEncode()); |
| |
| if (static_cast<bool>(request)) |
| sendResponse(request->getName(), response); |
| } |
| |
| void |
| RibManager::sendErrorResponse(uint32_t code, const std::string& error, |
| const shared_ptr<const Interest>& request) |
| { |
| NFD_LOG_ERROR("NFD returned an error: " << error << " (code: " << code << ")"); |
| |
| if (!static_cast<bool>(request)) |
| { |
| return; |
| } |
| |
| ControlResponse response; |
| |
| if (code == 404) |
| { |
| response.setCode(code); |
| response.setText(error); |
| } |
| else |
| { |
| response.setCode(533); |
| std::ostringstream os; |
| os << "Failure to update NFD " << "(NFD Error: " << code << " " << error << ")"; |
| response.setText(os.str()); |
| } |
| |
| if (static_cast<bool>(request)) |
| sendResponse(request->getName(), response); |
| } |
| |
| void |
| RibManager::onNrdCommandPrefixAddNextHopSuccess(const Name& prefix) |
| { |
| NFD_LOG_DEBUG("Successfully registered " + prefix.toUri() + " with NFD"); |
| } |
| |
| void |
| RibManager::onNrdCommandPrefixAddNextHopError(const Name& name, const std::string& msg) |
| { |
| throw Error("Error in setting interest filter (" + name.toUri() + "): " + msg); |
| } |
| |
| bool |
| RibManager::isTransactionComplete(const TransactionId transactionId) |
| { |
| FibTransactionTable::iterator it = m_pendingFibTransactions.find(transactionId); |
| |
| if (it != m_pendingFibTransactions.end()) |
| { |
| int& updatesLeft = it->second; |
| |
| updatesLeft--; |
| |
| // All of the updates have been applied successfully |
| if (updatesLeft == 0) |
| { |
| m_pendingFibTransactions.erase(it); |
| return true; |
| } |
| } |
| |
| return false; |
| } |
| |
| void |
| RibManager::invalidateTransaction(const TransactionId transactionId) |
| { |
| FibTransactionTable::iterator it = m_pendingFibTransactions.find(transactionId); |
| |
| if (it != m_pendingFibTransactions.end()) |
| { |
| m_pendingFibTransactions.erase(it); |
| } |
| } |
| |
| void |
| RibManager::onAddNextHopSuccess(const shared_ptr<const Interest>& request, |
| const ControlParameters& parameters, |
| const TransactionId transactionId, |
| const bool shouldSendResponse) |
| { |
| if (isTransactionComplete(transactionId) && shouldSendResponse) |
| { |
| sendSuccessResponse(request, parameters); |
| } |
| } |
| |
| void |
| RibManager::onAddNextHopError(uint32_t code, const std::string& error, |
| const shared_ptr<const Interest>& request, |
| const TransactionId transactionId, const bool shouldSendResponse) |
| { |
| invalidateTransaction(transactionId); |
| |
| if (shouldSendResponse) |
| { |
| sendErrorResponse(code, error, request); |
| } |
| |
| // Since the FIB rejected the update, clean up the invalid face |
| scheduleActiveFaceFetch(time::seconds(1)); |
| } |
| |
| void |
| RibManager::onRemoveNextHopSuccess(const shared_ptr<const Interest>& request, |
| const ControlParameters& parameters, |
| const TransactionId transactionId, |
| const bool shouldSendResponse) |
| { |
| if (isTransactionComplete(transactionId) && shouldSendResponse) |
| { |
| sendSuccessResponse(request, parameters); |
| } |
| } |
| |
| void |
| RibManager::onRemoveNextHopError(uint32_t code, const std::string& error, |
| const shared_ptr<const Interest>& request, |
| const TransactionId transactionId, const bool shouldSendResponse) |
| { |
| invalidateTransaction(transactionId); |
| |
| if (shouldSendResponse) |
| { |
| sendErrorResponse(code, error, request); |
| } |
| } |
| |
| void |
| RibManager::onControlHeaderSuccess() |
| { |
| NFD_LOG_DEBUG("Local control header enabled"); |
| } |
| |
| void |
| RibManager::onControlHeaderError(uint32_t code, const std::string& reason) |
| { |
| std::ostringstream os; |
| os << "Couldn't enable local control header " |
| << "(code: " << code << ", info: " << reason << ")"; |
| throw Error(os.str()); |
| } |
| |
| void |
| RibManager::enableLocalControlHeader() |
| { |
| m_nfdController.start<ndn::nfd::FaceEnableLocalControlCommand>( |
| ControlParameters() |
| .setLocalControlFeature(ndn::nfd::LOCAL_CONTROL_FEATURE_INCOMING_FACE_ID), |
| bind(&RibManager::onControlHeaderSuccess, this), |
| bind(&RibManager::onControlHeaderError, this, _1, _2)); |
| } |
| |
| void |
| RibManager::onNotification(const FaceEventNotification& notification) |
| { |
| NFD_LOG_TRACE("onNotification: " << notification); |
| |
| if (notification.getKind() == ndn::nfd::FACE_EVENT_DESTROYED) |
| { |
| NFD_LOG_DEBUG("Received notification for destroyed faceId: " << notification.getFaceId()); |
| |
| scheduler::schedule(time::seconds(0), |
| bind(&RibManager::processErasureAfterNotification, this, |
| notification.getFaceId())); |
| } |
| } |
| |
| void |
| RibManager::processErasureAfterNotification(uint64_t faceId) |
| { |
| m_managedRib.erase(faceId); |
| m_registeredFaces.erase(faceId); |
| |
| sendUpdatesToFibAfterFaceDestroyEvent(); |
| } |
| |
| void |
| RibManager::sendUpdatesToFib(const shared_ptr<const Interest>& request, |
| const ControlParameters& parameters) |
| { |
| const Rib::FibUpdateList& updates = m_managedRib.getFibUpdates(); |
| |
| // If no updates were generated, consider the operation a success |
| if (updates.empty()) |
| { |
| sendSuccessResponse(request, parameters); |
| return; |
| } |
| |
| bool shouldWaitToRespond = false; |
| |
| // An application request should wait for all FIB updates to be applied |
| // successfully before sending a response |
| if (parameters.getOrigin() == ndn::nfd::ROUTE_ORIGIN_APP) |
| { |
| shouldWaitToRespond = true; |
| } |
| else // Respond immediately |
| { |
| sendSuccessResponse(request, parameters); |
| } |
| |
| std::string updateString = (updates.size() == 1) ? " update" : " updates"; |
| NFD_LOG_DEBUG("Applying " << updates.size() << updateString << " to FIB"); |
| |
| // Assign an ID to this FIB transaction |
| TransactionId currentTransactionId = ++m_lastTransactionId; |
| |
| // Add this transaction to the transaction table |
| m_pendingFibTransactions[currentTransactionId] = updates.size(); |
| |
| for (Rib::FibUpdateList::const_iterator it = updates.begin(); it != updates.end(); ++it) |
| { |
| shared_ptr<const FibUpdate> update(*it); |
| NFD_LOG_DEBUG("Sending FIB update: " << *update); |
| |
| if (update->action == FibUpdate::ADD_NEXTHOP) |
| { |
| FaceEntry faceEntry; |
| faceEntry.faceId = update->faceId; |
| faceEntry.cost = update->cost; |
| |
| m_nfdController.start<ndn::nfd::FibAddNextHopCommand>( |
| ControlParameters() |
| .setName(update->name) |
| .setFaceId(faceEntry.faceId) |
| .setCost(faceEntry.cost), |
| bind(&RibManager::onAddNextHopSuccess, this, request, |
| parameters, |
| currentTransactionId, |
| shouldWaitToRespond), |
| bind(&RibManager::onAddNextHopError, this, _1, _2, request, currentTransactionId, |
| shouldWaitToRespond)); |
| } |
| else if (update->action == FibUpdate::REMOVE_NEXTHOP) |
| { |
| FaceEntry faceEntry; |
| faceEntry.faceId = update->faceId; |
| |
| m_nfdController.start<ndn::nfd::FibRemoveNextHopCommand>( |
| ControlParameters() |
| .setName(update->name) |
| .setFaceId(faceEntry.faceId), |
| bind(&RibManager::onRemoveNextHopSuccess, this, request, |
| parameters, |
| currentTransactionId, |
| shouldWaitToRespond), |
| bind(&RibManager::onRemoveNextHopError, this, _1, _2, request, currentTransactionId, |
| shouldWaitToRespond)); |
| } |
| } |
| |
| m_managedRib.clearFibUpdates(); |
| } |
| |
| void |
| RibManager::sendUpdatesToFibAfterFaceDestroyEvent() |
| { |
| ControlParameters parameters; |
| parameters.setOrigin(ndn::nfd::ROUTE_ORIGIN_STATIC); |
| |
| sendUpdatesToFib(shared_ptr<const Interest>(), parameters); |
| } |
| |
| void |
| RibManager::listEntries(const Interest& request) |
| { |
| const Name& command = request.getName(); |
| const size_t commandNComps = command.size(); |
| |
| if (commandNComps < LIST_COMMAND_NCOMPS || |
| !LIST_COMMAND_PREFIX.isPrefixOf(command)) |
| { |
| NFD_LOG_DEBUG("command result: malformed"); |
| sendResponse(command, 400, "Malformed command"); |
| return; |
| } |
| |
| m_ribStatusPublisher.publish(); |
| } |
| |
| void |
| RibManager::scheduleActiveFaceFetch(const time::seconds& timeToWait) |
| { |
| scheduler::cancel(m_activeFaceFetchEvent); |
| |
| m_activeFaceFetchEvent = scheduler::schedule(timeToWait, |
| bind(&RibManager::fetchActiveFaces, this)); |
| } |
| |
| void |
| RibManager::fetchActiveFaces() |
| { |
| NFD_LOG_DEBUG("Fetching active faces"); |
| |
| Interest interest(FACES_LIST_DATASET_PREFIX); |
| interest.setChildSelector(1); |
| interest.setMustBeFresh(true); |
| |
| shared_ptr<ndn::OBufferStream> buffer = make_shared<ndn::OBufferStream>(); |
| |
| m_face.expressInterest(interest, |
| bind(&RibManager::fetchSegments, this, _2, buffer), |
| bind(&RibManager::onFetchFaceStatusTimeout, this)); |
| } |
| |
| void |
| RibManager::fetchSegments(const Data& data, shared_ptr<ndn::OBufferStream> buffer) |
| { |
| buffer->write(reinterpret_cast<const char*>(data.getContent().value()), |
| data.getContent().value_size()); |
| |
| uint64_t currentSegment = data.getName().get(-1).toSegment(); |
| |
| const name::Component& finalBlockId = data.getMetaInfo().getFinalBlockId(); |
| if (finalBlockId.empty() || finalBlockId.toSegment() > currentSegment) |
| { |
| m_face.expressInterest(data.getName().getPrefix(-1).appendSegment(currentSegment+1), |
| bind(&RibManager::fetchSegments, this, _2, buffer), |
| bind(&RibManager::onFetchFaceStatusTimeout, this)); |
| } |
| else |
| { |
| removeInvalidFaces(buffer); |
| } |
| } |
| |
| void |
| RibManager::removeInvalidFaces(shared_ptr<ndn::OBufferStream> buffer) |
| { |
| NFD_LOG_DEBUG("Checking for invalid face registrations"); |
| |
| ndn::ConstBufferPtr buf = buffer->buf(); |
| |
| Block block; |
| size_t offset = 0; |
| FaceIdSet activeFaces; |
| |
| while (offset < buf->size()) |
| { |
| if (!Block::fromBuffer(buf, offset, block)) |
| { |
| std::cerr << "ERROR: cannot decode FaceStatus TLV" << std::endl; |
| break; |
| } |
| |
| offset += block.size(); |
| |
| ndn::nfd::FaceStatus status(block); |
| activeFaces.insert(status.getFaceId()); |
| } |
| |
| // Look for face IDs that were registered but not active to find missed |
| // face destroyed events |
| for (FaceIdSet::iterator it = m_registeredFaces.begin(); it != m_registeredFaces.end(); ++it) |
| { |
| if (activeFaces.find(*it) == activeFaces.end()) |
| { |
| NFD_LOG_DEBUG("Removing invalid face ID: " << *it); |
| scheduler::schedule(time::seconds(0), |
| bind(&RibManager::processErasureAfterNotification, this, *it)); |
| } |
| } |
| |
| // Reschedule the check for future clean up |
| scheduleActiveFaceFetch(ACTIVE_FACE_FETCH_INTERVAL); |
| } |
| |
| void |
| RibManager::onFetchFaceStatusTimeout() |
| { |
| std::cerr << "Face Status Dataset request timed out" << std::endl; |
| scheduleActiveFaceFetch(ACTIVE_FACE_FETCH_INTERVAL); |
| } |
| |
| } // namespace rib |
| } // namespace nfd |